CN110091764B - Railway ground automatic neutral section passing control method and ground automatic neutral section passing device - Google Patents
Railway ground automatic neutral section passing control method and ground automatic neutral section passing device Download PDFInfo
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- CN110091764B CN110091764B CN201810098338.3A CN201810098338A CN110091764B CN 110091764 B CN110091764 B CN 110091764B CN 201810098338 A CN201810098338 A CN 201810098338A CN 110091764 B CN110091764 B CN 110091764B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M3/00—Feeding power to supply lines in contact with collector on vehicles; Arrangements for consuming regenerative power
- B60M3/04—Arrangements for cutting in and out of individual track sections
Abstract
The invention discloses a railway ground automatic passing neutral section control method and a passing neutral section device, wherein the control method comprises the following steps: s1, configuring a first commutation switch unit bridged between a power supply arm at the driving-in side of a train and a neutral zone into a closed state, and configuring a second commutation switch unit bridged between the driving-out side of the train and the neutral zone into an open state; s2, when the train passes through the neutral section, switching of the phase change is realized by controlling the on-off of the first phase change switch unit and the second phase change switch unit; and S3, when the train runs out of the neutral zone, the second phase change switch unit is recovered to be in an off state and the first phase change switch unit is recovered to be in a closed state. The invention has the advantages of simple implementation method, capability of reducing the implementation cost of the over-phase separation, capability of ensuring the performance of the over-phase separation, safety, reliability and the like.
Description
Technical Field
The invention relates to the technical field of traction power supply of electrified railways, in particular to a railway ground automatic passing neutral section control method and a ground automatic passing neutral section device.
Background
As shown in fig. 1, a traction power supply system of an electrified railway in China adopts a 27.5kV single-phase power supply mode, a traction substation converts 110kV or 220kV three-phase power provided by a power system into 27.5kV single-phase alternating current to be supplied to a traction power supply network, but the single-phase power supply easily generates negative sequence current in a power grid, and the negative sequence current has great influence on equipment, a power transmission line, relay protection and the like in the power grid. In order to balance A, B, C three-phase current of an electric power system, a traction substation carries out a phase-changing and alternate power supply mode on a contact network, and simultaneously, in order to prevent interphase short circuit and circulation between power supply sources, each interphase of the contact network is divided by adopting an insulator, namely, the contact network is 'electrically split', so that an electrically split-phase device is required to be arranged at an outlet of the substation and a partition between two traction substations (tail ends of power supply arms).
In order to avoid circulation among substations, an anchor section type joint is used for forming an electric phase splitting area on a physical structure so as not to be directly connected, so that the problem of how to pass through the electric phase splitting exists when an electric locomotive, a motor train unit and the like run by taking electricity from a contact net. In order to prevent the accident of damage to a contact system caused by arc discharge due to the fact that a driver manually operates the neutral section in a misoperation mode and breaks the neutral section in an electrified mode, when a train passes through the neutral section, two modes of vehicle-mounted power-off automatic neutral section passing or ground automatic neutral section passing are usually adopted.
At present, a vehicle-mounted automatic neutral section passing mode is mainly adopted in China to cut off power and pass through the dead zone, but the mode can cause the loss of traction force and speed loss of a train, particularly in some sections with high gradients (such as gradients larger than 30%), the influence is particularly serious, high-speed railways in China have the characteristics of large scale and long distance, the neutral section passing points of long-travel high-speed trains are more, the vehicle-mounted neutral section passing scheme has obvious train power loss, the running time cannot be compressed to the maximum extent, the maintenance workload of the high-speed trains is large, the maintenance downtime is long, and the running requirements of the high-speed railways cannot be met.
The ground automatic passing neutral section supplies power to the neutral section by switching the ground switch bridged between the neutral section and the power supply arm, the neutral section has short power-free time, the train has no speed loss, and meanwhile, the main circuit breaker on the train does not act, so that the on-off times are reduced, the service life of the main circuit breaker can be prolonged, the requirements of less power loss, compressed running time, reduction of maintenance workload of the high-speed train, reduction of maintenance and outage time and the like of the high-speed train can be met, but the current ground automatic passing neutral section scheme is still in a design test stage.
As shown in FIG. 2, a neutral zone is arranged at a split-phase position of a contact network, split-phase insulators JY1 and JY2 are used for isolating the neutral zone from power supply arms, ground switches K1 and K2 are respectively bridged on JY1 and JY2, at least three train position sensors are mounted on a train running route, and the ground switches K1 and K2 are controlled according to signals of the position sensors so as to switch the two power supply arms to supply power for the neutral zone. The specific process of passing neutral section control is as follows: when the sensor G1 detects the arrival of a train, the control switch K1 is closed so that the neutral zone is powered by the a arm; when the train enters the neutral zone and reaches the sensor G2, the switch K1 is opened, the switch K2 is closed, and the B arm is switched to supply power to the neutral zone; when the train moves to G3, the train enters the B arm power supply area, the switch K1 is disconnected, and the neutral area is powered off.
When the conventional ground automatic neutral section passing device shown in fig. 2 performs neutral section passing control, both ground switches are off in a normal state, the neutral section is in a neutral state, and the on-off switching of the switches is performed when a train passes the neutral section, whereas the neutral section is in the neutral state before the train enters the neutral section, and the on-off switching needs to be performed immediately when the train enters the neutral section to switch the power supply arm to supply power to the neutral section, so that the neutral section passing control mode needs to detect the state (corresponding to the sensor G1) that the train enters the neutral section in real time, and when the sensor G1 detects that the ground switches are closed immediately when the train reaches the neutral section, the detection is performed respectively to detect whether the train reaches a phase-changing position (corresponding to G2) and whether the train leaves the neutral section (corresponding to G3). In the control mode of the traditional automatic neutral section passing device, a sensor is required to be arranged to detect whether the train reaches a neutral section or not in real time, so that the control cost is increased, hardware fault points are increased, the performance of the sensor can influence the reliable execution of the neutral section, and the running reliability of the train is reduced.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: aiming at the technical problems in the prior art, the invention provides a safe and reliable railway ground automatic neutral section passing control method which is simple in implementation method, can reduce neutral section passing implementation cost and simultaneously ensures neutral section passing performance, and a ground automatic neutral section passing device which is low in cost, safe and reliable.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a railway ground automatic neutral section passing control method comprises the following steps:
s1, configuring a first commutation switch unit bridged between a power supply arm at the driving-in side of a train and a neutral zone into a closed state, and configuring a second commutation switch unit bridged between the driving-out side of the train and the neutral zone into an open state;
s2, when the train passes through the neutral section, switching of the neutral section is realized by controlling the on-off of the first phase change switch unit and the second phase change switch unit;
and S3, when the train runs out of the neutral zone, the second phase change switch unit is recovered to be in an off state, and the first phase change switch unit is recovered to be in a closed state.
As a further improvement of the method of the present invention, the specific steps of step S2 are:
s21, after the train enters a neutral zone, a power supply arm on the train driving side supplies power to the neutral zone;
s22, detecting the running position of the train, and when detecting that the train reaches the commutation position, executing a step S23;
and S23, after the first commutation switch unit is controlled to be disconnected, the second commutation switch unit is closed, so that the power supply arm on the train exit side is used for supplying power to the neutral zone in switching, and commutation switching is completed.
As a further improvement of the process of the invention: in step S23, the current signal and the voltage signal of the first commutation switch unit and the second commutation switch unit are detected, and the first commutation switch unit is controlled to be turned off and the second commutation switch unit is controlled to be turned on according to the detected current signal and voltage signal.
As a further improvement of the process of the invention: the specific steps of step S3 are:
s31, detecting the running position of the train, and when detecting that the train is about to run out of the neutral zone, executing the step S32;
and S32, after the second phase change switch unit is disconnected, the first phase change switch unit is closed, so that power supply of the neutral zone by the power supply arm on the train driving side is recovered.
As a further improvement of the process of the invention: the method also comprises the step of arranging a position detection unit for detecting whether the train reaches a position needing phase change and whether the train is about to exit the neutral zone in advance in the neutral zone, wherein the step S2 and the step S3 control the on and off of the first phase change switch unit and the second phase change switch unit according to signals detected by the position detection unit.
The control unit is respectively connected with the two phase change switch units, a first phase change switch unit positioned on the train driving-in side of the two phase change switch units is configured to be in a closed state, a second phase change switch unit bridged between the train driving-out side and the neutral zone is in an open state, the control unit realizes phase change switching by controlling the on-off of the first phase change switch unit and the second phase change switch unit when the train passes the neutral zone, and when the train leaves the neutral zone, the first phase change switch unit is recovered to be in the closed state and the second phase change switch unit is recovered to be in the open state.
As a further improvement of the device of the invention: the train control system further comprises a position detection unit for detecting whether the train reaches a commutation position and is about to leave a neutral zone, and the position detection unit is connected with the control unit.
As a further improvement of the device of the invention: the position detection unit comprises a first detection circuit arranged at a position where the neutral zone needs to be commutated and a second detection circuit arranged in the neutral zone.
As a further improvement of the device of the invention: the phase change switch unit is a mechanical switch circuit or an electronic switch circuit.
As a further improvement of the device of the invention: the phase change switch unit is used for switching between a phase change state and a phase change state, and the phase change switch unit is used for switching between a phase change state and a phase change state.
As a further improvement of the device of the invention: the protection unit is used for performing protection control on the two phase change switch units.
Compared with the prior art, the invention has the advantages that:
1) the invention can ensure that the first commutation switch unit at the driving side in the ground automatic phase passing device is always in a closed state and the second commutation switch at the other side is in an open state when the passing phase control is not carried out, so that when a train passes the passing phase, because the first commutation switch unit is in the closed state, the train is directly powered by the power supply arm at the driving side before entering the neutral zone and before the commutation switching, the position state of whether the train enters the neutral zone is not required to be detected in real time, the arrangement of the train position detection sensor at the driving side can be reduced, the performance of the passing phase control can not be influenced, the control cost can be reduced, hardware fault points can be reduced, meanwhile, the neutral zone can be electrified for a long time, the conditions that the train breaks through the phase and falls the phase can be avoided, the safe and reliable operation of the train can be ensured, and the line operation force can be improved.
2) According to the invention, the first detection circuit is arranged at the position of the neutral zone train where the phase change is needed, the second detection circuit is arranged at the tail end position of the neutral zone, the first detection circuit is used for detecting whether the train reaches the phase change position, the second detection circuit is used for detecting whether the train is about to leave the neutral zone, the control unit is used for controlling the two phase change switch units to execute the phase change switching according to the train position signals detected by the first detection circuit and the second detection circuit, only two position detection circuits are needed, compared with the traditional ground automatic neutral section passing control mode, the arrangement of one position detection circuit is reduced, the device cost can be reduced, and the safety and reliability of the control are improved.
Drawings
Fig. 1 is a schematic structural diagram of a traction power supply system.
Fig. 2 is a schematic structural diagram of a conventional ground automatic passing neutral section device for realizing control.
FIG. 3 is a schematic flow chart of the implementation of the railway ground automatic neutral section passing control method according to the embodiment.
FIG. 4 is a schematic structural diagram of the ground automatic neutral-section passing device used in the present embodiment.
Fig. 5 is a schematic structural diagram of the control of the ground automatic passing neutral section device according to the embodiment.
FIG. 6 is a schematic diagram of the control principle of the automatic ground passing neutral section device according to the present embodiment when performing phase change switching.
FIG. 7 is a schematic diagram of the control principle of the ground automatic neutral-section passing device of the embodiment when the train leaves the neutral zone.
FIG. 8 is a schematic diagram of the control principle of the automatic ground neutral-section passing device in the maintenance state.
Detailed Description
The invention is further described below with reference to the drawings and specific preferred embodiments of the description, without thereby limiting the scope of protection of the invention.
As shown in fig. 3, the method for controlling the automatic neutral section passing on the railway ground according to the embodiment includes the following steps:
s1, configuring a first commutation switch unit bridged between a power supply arm at the driving-in side of a train and a neutral zone into a closed state, and configuring a second commutation switch unit bridged between the driving-out side of the train and the neutral zone into an open state;
s2, when the train passes through the neutral section, switching of the phase change is realized by controlling the on-off of the first phase change switch unit and the second phase change switch unit;
and S3, when the train runs out of the neutral zone, the second phase change switch unit is recovered to be in an off state, and the first phase change switch unit is recovered to be in a closed state.
According to the method, when no passing neutral section control is carried out, the first phase change switch unit on the driving side in the ground automatic phase passing device is always in a closed state, and the second phase change switch on the other side is in an open state, so that when a train passes the neutral section, the first phase change switch unit is in the closed state, the train is directly powered by the power supply arm on the driving side before entering the neutral section and before phase change switching, whether the train enters the position state of the neutral section or not is not required to be detected in real time, the arrangement of train position detection sensors on the driving side can be reduced, the performance of passing neutral section control cannot be influenced, the control cost can be reduced, hardware fault points are reduced, meanwhile, the neutral section can be electrified for a long time, the conditions that the train breaks through the neutral section and falls off the neutral section are avoided, the safe and reliable operation of the train is guaranteed, and the line transport capacity is improved.
As shown in fig. 4 and 5, the ground automatic passing neutral section device specifically adopted in this embodiment includes a control unit and two commutation switch units (K1, K2) respectively bridged between two power supply arms and a neutral section, the two commutation switch units (K1, K2) are used as control execution units, the control unit is respectively connected with the two commutation switch units (K1, K2), a first commutation switch unit K1 positioned on the train entering side of the two commutation switch units (K1, K2) is configured to be in a closed state, a second commutation switch K2 bridged between the train exiting side and the neutral section is in an open state, the control unit controls the on-off of the first commutation switch unit K1 and the second commutation switch unit K2 to realize commutation switching when the train passes the neutral section, and restores the first commutation switch unit K2 to be in the closed state and the second commutation switch unit to be in the open state when the train leaves the neutral section, when the passing phase separation control is not performed, the first phase change switch unit K1 is always in a closed state, and the second phase change switch K2 is in an open state, and when the passing phase separation control is performed, the phase change switching is realized through the on-off of the first phase change switch unit K1 and the second phase change switch K2.
The ground automatic passing neutral section device of the embodiment specifically further comprises a position detection unit which is arranged in the neutral section in advance and used for detecting whether the train reaches the position needing phase change and whether the train is about to exit from the neutral section, and the switching on and off of the first phase change switch unit and the second phase change switch unit are controlled according to signals detected by the position detection unit in the steps S2 and S3. Specifically, a first detection circuit PS1 is arranged at a position where a neutral zone train needs to be phase-shifted, a second detection circuit PS2 is arranged at the tail end position of the neutral zone, the first detection circuit PS1 detects whether the train reaches a phase-shifted position, the second detection circuit PS2 detects whether the train is about to leave the neutral zone, the first detection circuit PS1 and the second detection circuit PS2 are respectively connected with a control unit, and the control unit controls two phase-shifting switch units to perform phase-shifting switching according to train position signals detected by the first detection circuit PS1 and the second detection circuit PS 2. The ground automatic neutral section passing device of the embodiment only needs to be provided with two position detection circuits, and compared with the traditional ground automatic neutral section passing control mode, the arrangement of one position detection circuit is reduced, the device cost can be reduced, and the safety and reliability of control are improved.
Specifically, the first detection circuit PS1 and the second detection circuit PS2 may be axle counting sensors, but other detection devices such as electronic transponders may be used.
In this embodiment, the specific steps of step S2 are as follows:
s21, after the train enters a neutral zone, a power supply arm on the train driving side supplies power to the neutral zone;
s22, detecting the running position of the train, and when detecting that the train reaches the commutation position, executing a step S23;
and S23, after the first commutation switch unit K1 is controlled to be switched off, the second commutation switch unit K2 is switched on, so that the power supply arm on the train driving-out side is switched to supply power to the neutral zone, and commutation switching is completed.
As shown in fig. 4 and 6, after the train enters the neutral zone, because the first commutation switch unit is in a closed state, the train directly supplies power to the neutral zone by the train entering side power supply arm after entering the neutral zone until reaching the commutation position, without switching, only a first detection circuit PS1 needs to be arranged at the position of the neutral zone train where commutation is needed, so as to detect whether the train reaches the commutation position; when the first detection circuit PS1 detects a train position signal, the first commutation switch unit K1 is controlled to be turned on, the second commutation switch unit K2 is controlled to be turned off, and the power supply arm on the other side is switched to supply power to the neutral area, so that commutation switching is realized.
In this embodiment, in step S23, the current signals of the first commutation switch unit K1 and the second commutation switch unit K2 and the voltage signals of the two power supply arms are detected, and the first commutation switch unit K1 is turned off and the second commutation switch unit K2 is turned on according to the detected current signals and voltage signals.
The ground automatic neutral-section passing device further comprises current detection units (CT1 and CT2) used for detecting current signals of the two phase-change switch units respectively, and voltage detection units (PT1 and PT2) used for detecting voltage signals of the two power supply arms in real time, wherein the current detection units (CT1 and CT2) and the voltage detection units (PT1 and PT2) are connected with the control unit, and the control unit controls the phases of the first phase-change switch unit K1 and the second phase-change switch unit K2 according to the current signals detected by the current detection units (CT1 and CT2) and the voltage signals detected by the voltage detection units (PT1 and PT2), namely controls the corresponding phase-change switch units to be opened/closed when the current/voltage signals reach a specified phase.
In this embodiment, the specific steps of step S3 are as follows:
s31, detecting the running position of the train, and when detecting that the train is about to run out of the neutral zone, executing the step S32;
and S32, after the second commutation switch unit K2 is opened, closing the first commutation switch unit K1, so that the power supply of the neutral zone by the train driving side power supply arm is recovered.
As shown in fig. 7, after the commutation switching is completed, it is only necessary to set a second detection circuit PS2 at the end position of the neutral zone to detect whether the train is about to leave the neutral zone or not, and detect whether the train is about to leave the neutral zone through the second detection circuit PS2, and when the second detection circuit PS2 detects a train position signal, the second commutation switch unit K2 is controlled to be turned off, the first commutation switch unit K1 is turned on, the first commutation switch unit K1 and the second commutation switch unit K2 are restored to the initial states, and the next passing neutral section control is waited.
The phase change switch unit in this embodiment may be a mechanical switch circuit such as a vacuum circuit breaker and a contactor, or an electronic switch circuit such as a thyristor, a transistor, a field effect transistor, and a thyristor.
In the embodiment, the protection unit is used for performing protection control on the two commutation switch units (K1, K2), specifically, detection breakers (QF1, QF2) are respectively arranged at the input ends of the two commutation switch units, isolating switches (QS1, QS2, QS3) are arranged between the two commutation switch units and the two power supply arms and the neutral zone, and device protection is performed according to preset fixed values and logic.
When the ground automatic neutral-section passing device works, the position detection circuits PS1 and PS2 provide train position signals to the control unit, and the voltage transformers (PT1 and PT2) and the current transformers (CT1 and CT2) provide voltage signals and current signals of two phase-change switch units to the control unit; the control unit outputs control signals to control the switching-on and switching-off of K1 and K2 according to signals provided by the position detection units (PS1 and PS2), the voltage transformers (PT1 and PT2) and the current transformers (CT1 and CT2), and receives state feedback of the K1 and K2 switches; meanwhile, the control unit receives action prediction signals of the protection units (QF1, QF2, QS1, QS2 and QS3), outputs command signals to the protection units, and divides QF1 and QF 2.
As shown in fig. 4 to 8, the detailed flow of the ground automatic neutral-section passing device for performing neutral-section passing control when the train (electric locomotive/motor train unit) runs from left to right in the present embodiment is as follows:
as shown in fig. 4, normally the disconnector (QS1, QS2, QS3), circuit breaker (QF1, QF2), and first commutation switch K1 are all closed, the neutral zone being charged; when the train enters a neutral zone, the power is directly supplied by the left power supply arm;
as shown in fig. 6, when the train moves to the PS1 position, the PS1 detection circuit detects the position signal and sends the signal to the control unit; the control unit receives a PS1 position detection signal and prepares for a switching process, the control unit outputs a signal to enable the first commutation switch unit K1 to be switched off and the second commutation switch unit K2 to be switched on, and at the moment, the neutral region is switched to be powered by the right power supply arm;
as shown in fig. 7, when the train is driven to the PS2 position, the PS2 detection circuit detects the position signal and sends the signal to the control unit; the control unit receives a PS2 position detection signal, and after the control unit receives the position detection signal, the control unit outputs a signal to enable the second commutation switch unit K2 to be disconnected and the first commutation switch unit K1 to be closed, and at the moment, the neutral zone is recovered to be in a state of being powered by the left power supply arm;
as shown in fig. 8, in the maintenance situation, the disconnectors (QS1, QS2 and QS3), the circuit breakers (QF1 and QF2), the first commutation switch unit K1 and the second commutation switch unit K2 are all in an open state, and the neutral area is not charged to ensure safety.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (8)
1. A railway ground automatic neutral section passing control method is characterized by comprising the following steps:
step S1, configuring a first commutation switch unit bridged between the power supply arm on the train entering side and the neutral zone into a closed state, and configuring a second commutation switch unit bridged between the power supply arm on the train exiting side and the neutral zone into an open state;
step S2, when the train passes through the neutral section, the switching of the phase change is realized by controlling the on-off of the first phase change switch unit and the second phase change switch unit;
step S3, when the train runs out of the neutral zone, the second phase change switch unit is recovered to be in an open state, and the first phase change switch unit is recovered to be in a closed state;
the specific steps of step S2 are:
step S21, after the train enters the neutral zone, the power supply arm at the train driving side supplies power to the neutral zone;
step S22, detecting the running position of the train, and when detecting that the train reaches the commutation position, executing the step S23;
step S23, after the first commutation switch unit is controlled to be disconnected, the second commutation switch unit is closed, so that the power supply arm on the train exit side is switched to supply power to the neutral zone, and commutation switching is completed;
in step S23, voltage signals and current signals of the first commutation switch unit and the second commutation switch unit are detected, and the first commutation switch unit is turned off and the second commutation switch unit is turned on according to the detected current signals and voltage signals.
2. The railway ground automatic neutral-section passing control method according to claim 1, characterized in that: the specific steps of step S3 are:
step S31, detecting the running position of the train, and when detecting that the train is going to run out of the neutral zone, executing the step S32;
and step S32, after the second commutation switch unit is opened, the first commutation switch unit is closed, so that the power supply of the neutral zone by the train driving side power supply arm is recovered.
3. The railway ground automatic neutral-section passing control method according to claim 1 or 2, characterized in that: the method also comprises the step of arranging a position detection unit for detecting whether the train reaches a position needing phase change and whether the train is about to exit the neutral zone in advance in the neutral zone, wherein the step S2 and the step S3 control the on and off of the first phase change switch unit and the second phase change switch unit according to signals detected by the position detection unit.
4. The ground automatic passing neutral section device comprises a control unit and two phase change switch units respectively bridged between two power supply arms and a neutral section, wherein the control unit is respectively connected with the two phase change switch units, and the ground automatic passing neutral section device is characterized in that: a first commutation switch unit positioned on the train entering side of the two commutation switch units is configured to be in a closed state, a second commutation switch bridged between the train exiting side and the neutral zone is in an open state, the control unit controls the on-off of the first commutation switch unit and the second commutation switch unit to realize commutation switching when the train passes the neutral zone, and when the train leaves the neutral zone, the second commutation switch unit is recovered to be in the open state and the first commutation switch unit is recovered to be in the closed state; the phase change switch is characterized by further comprising a current detection unit and a voltage detection unit, wherein the current detection unit is used for detecting two current signals of the phase change switch unit, the voltage detection unit is used for detecting two voltage signals of the phase change switch unit, the current detection unit and the voltage detection unit are respectively connected with the control unit, and the first phase change switch unit and the second phase change switch unit are controlled to be disconnected and closed according to the detected current signals and voltage signals.
5. The ground automatic neutral-section passing device according to claim 4, wherein: the train control system further comprises a position detection unit for detecting whether the train reaches a commutation position and is about to leave a neutral zone, and the position detection unit is connected with the control unit.
6. The floor automatic passing neutral section device of claim 5, wherein: the position detection unit comprises a first detection circuit arranged at a position where the neutral zone needs to be commutated and a second detection circuit arranged in the neutral zone.
7. The ground automatic passing neutral section device of claim 4, 5 or 6, wherein: the phase change switch unit is a mechanical switch circuit or an electronic switch circuit.
8. The ground automatic passing neutral section device according to claim 4, 5 or 6, further comprising a protection unit for performing protection control on two of the commutation switch units.
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| CN201810098338.3A CN110091764B (en) | 2018-01-31 | 2018-01-31 | Railway ground automatic neutral section passing control method and ground automatic neutral section passing device |
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| CN110171326A (en) * | 2019-04-29 | 2019-08-27 | 中国神华能源股份有限公司 | Ground automatic neutral-section passing device and method |
| CN110395146A (en) * | 2019-08-28 | 2019-11-01 | 中车大连机车车辆有限公司 | A kind of electric vehicle floor power supply device, method, controller and storage medium |
| CN110667439B (en) * | 2019-09-03 | 2023-06-30 | 株洲中车时代电气股份有限公司 | Method and system for controlling automatic passing neutral section of train |
| CN112339621B (en) * | 2020-11-10 | 2022-10-18 | 西南交通大学 | Method for reducing adverse effect of train passing through double-flow neutral section |
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| CN106347175B (en) * | 2016-09-28 | 2022-05-31 | 北京易菲盛景科技有限责任公司 | Improved intelligent electric phase splitting device for alternating current electrified railway |
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